On a debian squeeze system my network configuration looks like this:
auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp auto eth0:0 iface eth0:0 inet static address 18.104.22.168 netmask 255.255.255.0 gateway 22.214.171.124
So far everything works fine, but whenever the dhcp client (isc-dhcp-client) renews its configuration it removes/ brings down eth0:0. How can I fix this? Please note that I can't change any settings of the dhcp server and it only provides the "primary" ip.